ABSTRACT
ABSTRACT: A true triaxial testing machine for large rock block specimens has been developed for investigating the interaction between joints and intact rocks. Its main features include the it capacity for large specimens and high loading capability in all three orthogonal directions, which allow jointed rocks under stress conditions encountered in situ to be tested to failure. The sampling and testing technique and the test results of a jointed rock block are presented in this paper. In addition, representativeness of large rock block specimens is discussed.
